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  <title>Create a new socket</title>
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  <div id="layout-content"><div id="zmqcontext.getsocket" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ZMQContext::getSocket</h1>
  <p class="verinfo">(PECL zmq &gt;= 0.5.0)</p><p class="refpurpose"><span class="refname">ZMQContext::getSocket</span> &mdash; <span class="dc-title">Create a new socket</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-zmqcontext.getsocket-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>ZMQContext::getSocket</strong></span>(<span class="methodparam"><span class="type">int</span> <code class="parameter">$type</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$persistent_id</code><span class="initializer"> = <strong><code>null</code></strong></span></span>, <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$on_new_socket</code><span class="initializer"> = <strong><code>null</code></strong></span></span>): <span class="type"><a href="class.zmqsocket.html" class="type ZMQSocket">ZMQSocket</a></span></div>

  <p class="para rdfs-comment">
   Shortcut for creating new sockets from the context. If the context is not persistent the <code class="parameter">persistent_id</code> 
   parameter is ignored and the socket falls back to being non-persistent. The <code class="parameter">on_new_socket</code> is called only
   when a new underlying socket structure is created.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-zmqcontext.getsocket-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">type</code></dt>

     <dd>

      <p class="para">
       <strong><code>ZMQ::SOCKET_*</code></strong> constant to specify socket type.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">persistent_id</code></dt>

     <dd>

      <p class="para">
       If <code class="parameter">persistent_id</code> is specified the socket will be persisted over multiple requests.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">on_new_socket</code></dt>

     <dd>

      <p class="para">
       Callback function, which is executed when a new socket structure is created. This function does not get invoked
       if the underlying persistent connection is re-used. The callback takes ZMQSocket and persistent_id as two arguments.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-zmqcontext.getsocket-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns a <span class="classname"><a href="class.zmqsocket.html" class="classname">ZMQSocket</a></span> object.
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-zmqcontext.getsocket-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   Throws <span class="classname"><strong class="classname">ZMQSocketException</strong></span> on error.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-zmqcontext.getsocket-examples">
 <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4593">
    <p><strong>示例 #1 A <span class="function"><strong>ZMQContext()</strong></span> example</strong></p>
    <div class="example-contents"><p>
     Basic usage
    </p></div>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">/*&nbsp;Allocate&nbsp;a&nbsp;new&nbsp;context&nbsp;*/<br /></span><span style="color: #0000BB">$context&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">ZMQContext</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">/*&nbsp;Create&nbsp;a&nbsp;new&nbsp;socket&nbsp;*/<br /></span><span style="color: #0000BB">$socket&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$context</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getSocket</span><span style="color: #007700">(</span><span style="color: #0000BB">ZMQ</span><span style="color: #007700">::</span><span style="color: #0000BB">SOCKET_REQ</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'my&nbsp;sock'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Connect&nbsp;the&nbsp;socket&nbsp;*/<br /></span><span style="color: #0000BB">$socket</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"tcp://example.com:1234"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Send&nbsp;a&nbsp;request&nbsp;*/<br /></span><span style="color: #0000BB">$socket</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">send</span><span style="color: #007700">(</span><span style="color: #DD0000">"Hello&nbsp;there"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Receive&nbsp;back&nbsp;the&nbsp;response&nbsp;*/<br /></span><span style="color: #0000BB">$message&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$socket</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">recv</span><span style="color: #007700">();<br />echo&nbsp;</span><span style="color: #DD0000">"Received&nbsp;message:&nbsp;</span><span style="color: #007700">{</span><span style="color: #0000BB">$message</span><span style="color: #007700">}</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>


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